Printing control means for cash



March 4, 1947. AR ER E TAL 2,416,792

PRINTING CONTROL'MEANS FOR CASH REGISTERS Filed June 14, 1943 4 Sheets-Sheet 1 Elmer C; Carter and Charles G. Dudis Inventors Their Attorney March 1947. E. c. CARTER ET AL PRINTING CONTROL MEANS FOR cAsH REGISTERS Filed June 14 1943 v 4 Sheets-Sheet 2 d m. mm a c in mm EC Inventbrs 7 By M Their Audi-n March 4, 1947.

E. C. CARTER ETAL PRINTING CONTROL MEANS FOR CASH REGISTERS Filegl June 14, 1943 4 Sheets-Sheet 3 :04 I FIG; .7 225 237 C am 226 223 23s 383 Elmer C. Cartcr and Charles G. Dudis Inventor:

Their Attorney" March 1947- E. cl CARTER ET AL I 2,416,792

PRINTING CONTROL MEANS FOR CASH REGISTERS Filed June 14, 1943 4 Sheets-Sheet 4 Elmer Car ter and Charles G. Dudis Inventors BYMM -T heir Attorney i a tented Mar. 4, 1 947 PRINTING CONTROL MEANS FOR CASH REGISTERS Elmer C. Carter, West Milton, and Charles G, Dudis, Dayton, Ohio, assignors to The National Cash Register Company, Dayton, Ohio, a corporation of Maryland Application June 14, 1943, Serial'No; 490,750

5 Claims.

This invention relates to cash registers and accounting machines of the type shown in United States Letters Patent Nos. 1,812,194 and 1,963,733,

issued June 30, 1931, and June 19, 1934, respectively, to Samuel Brand; Nos. 1,817,883 and 1,865,147,-issued August 4, 1931, and June 28, 1932, respectively, to Bernis M. Shipley; and No. 2,154,381, issued April 11, 1939, to John H. Gruver, and is directed to the printing mechanisms of such machines.

In machines of this type, selective control means is provided for controlling the operativeness of the different printing hammers so that only the desired hammer or hammers will be operative during certain kinds of operations. Previously, operating devices, actuated by strong springs, were provided for each of said hammers, all of said devices being actuated simultaneously during each operation of the machine, regardless of the operativeness of the different printing hammers. The many idle operations thus performed by these devices produced unnecessary wear and strain upon their component parts, resulting in a certain amount of breakage of certain of said parts, and, in general, shortening the life of some of the other of said parts. In addition, the simultaneous actuation of all of said devices during each operation of the machine placed a heavy load on the machine operating mechanism and created considerable noise incident to the operation of said devices.

The present invention provides individual devices, each employing a comparatively light spring for actuation thereof, for operating the difierent printing hammers, each device being actuated only when its appropriate printing hammer is operative. These devices are so arranged that, if more than one printing hammer is to be operated during the same operation of the machine, certain of said devices will be actuated in alternating order. The elimination of the idle operations of said devices, alternatingthe order of actuation of certain of said devices, and the use of lighter springs for the actuation thereof have resulted. in less. breakage of certain of the parts in said printing mecha nism, as well as greatly increased the life of other of said parts. In addition, the heavy load normally placed on the machine operating mechanism by the operation of said devices has been greatly alleviated, and the noise formerly occasioned by the simultaneous operation of all of said devices during each operation of the machine has been considerably reduced. The present invention has also eliminated the need for the rebound-preventing pawls usually employed in connection with the printing hammers. It is therefore an object of this invention to provide simple means for reducing the noise incident to the operation of the printing hammer operating mechanism. Another object is the provision of means for alleviating'the load normally placed on the ma: chine operating mechanism by the printing hammer operating devices.

An additional object is the provision of means for eliminating the need for theusual reboundpreventing pawls used in connection with the printing hammers.

A further object is the provision of means employing much lighter springs than those normally used for operating the printing hammers.

Another object is to provide printing hammer actuating means, the effectivity of said means being controlled by said printing hammer.

An additional object is to provide'means controlled by the printing hammer for determining the effectivity of the printing hammer operating means.

Another object is to provide novel means for controlling the efiectivity-of the printing hammer operating means.

A further object is to provide means for rendering the printing hammer actuating mechanism inoperable when the printing hammer; is

inoperative. r

A still further object is to provide means for operating a plurality of printing hammer actuating devices in any selective order under con.- trol of the printing hammers. I I

With these and incidental objects in view, the invention includes certainnovel features of construction and combinations of parts, the essential elements of which are set forth in appended claims and a preferredio-rm or embodiment of which is hereinafter described with reference ,to the drawings which accompany and form a part of this specification. Of said drawings: j

Fig; 1 shows the control key bank and its differential mechanism.

Fig. 2 is a detail of the means controlled-by Fig. 5 is a detail view of a portion of the actuating device for the electro total printin hammer, together with the means for retaining said device in its retracted position. Fig. 6 is a detail view of the operating device for the electro printin hammer, together with the means for retaining said device in its retracted position. v

Fig. 7 is a detail view of the lower printing hammer and the operating device therefor, as

well as the means for retaining said device in its Fig. 9 is a detail plan. view of the various upper impression hammers, their operatin devices, and the means for retaining said devices in their retracted positions.

Fig. 10 is a detail view of the total lever and means controlled thereby for controlling the operativeness of the various printing hammers, togetherwith other "means also controlled by said lever to supersede the control of the first-mentioned means during sub-total operations.

'Fig. 11 is a detail of the latching device to 1 control the operation of the lower hammer.

Th present invention is illustrated as applied to a machine of the type disclosed in the abovementioned Shipley and Brand patents. In this type of machin'e,"type carriers are provided, which are adjusted difierentially under control of de- The printing mechanism is.

pressible keys. adapted to print and issue an itemized receipt, as well as print on a detail strip or on an inserted slip. Three upper printing hammersviz., item,

1 total, and electro-are provided to make impres- .sions on the receipt paper, while a single lower printing hammer is provided for making impresj sions on the detail'strip.

When the items of a multiple-item transaction jor a single-item transaction are printed, all of the hammers except the item hammer, are disabled. The item hammer is wide enough "to print only from those amount type carriers which are adjusted by the differentials under control of depressible amount keys. The total hammer is .wide enough to print from the higher, or overflow, amount type carriers andfro-m' the clerks and transaction type carriers.

When the total of a multiple-item transaction ;or of a single-item transaction is printed, both the item hammers and the total hammers are operated simultaneously to print from their appropriate type carriers, while the electro hammer is operated at a different time to print the name .of the store; the date, and any other desired information. The lower printing hammer is op- 1 erated at a still different time in the operation to print onthe detail strip the total amount, aswell as the clerks and transaction characters. I V The usual total control lever is employed herein to condition the machine for single-cycleadding operations and two-cycle total or sub-total op jerations. The total lever also controls the operativeness of the different'printin hammers. For example, when the'total lever is in its normal ,add position, all of the. printing hammers, ex-

cept the item hammer, are rendered inoperative. When the total lever is moved to its sub-total position, all of the hammers, except the item hammer, are rendered inoperative. Onthe other.

hand, if the total lever ismoved to its total pooperative.

Individual operating devices are provided for each of the printing hammers, which devices are 5 adapted to be first retracted against th action of separate springs and then released to the action of said springs to operate their corresponding hammers.

The present invention provides means for relO taining said operating devices in their retracted positions to prevent idle operation thereof when the printing hammers are to be inoperative. If the printing hammers have been rendered operative, they will control said means so that the op 15 erating devices will not be retained in retracted positions and consequently will be free to operate their corresponding hammers.

, DETAILED DESCRIPTION Keys and dz'fierlntial mechanism The keyboard and differential mechanism in the present application is substantially like that above-mentioned Shipley patent, and form no part of the present invention, they are neither shown nor described herein.

Since the control exercised by the total lever over the operativeness of the printing hammers is superseded by the control of what is known as a transaction or control bank of keys, when a nosale operation is performed, this bank of keys and the differential mechanism associated therewith are illustrated herein (Fig. 1) and will be briefly described. This bank comprises six transaction keys (it carried by the usual key frame 62 supported on cross rods 63 and 64 mounted in the machine side frames, only one of which (86') is shown (Fig. 9). Beginning with the top transaction key 8| and proceeding downwardly, the keys bear the captions Groceries, Product, Dairy,

' Special, Grand total, and N0 sale. Only the lowermost or No sale key SI is adapted to controlmeans for superseding the control normally exercised by the total lever over the operativeness of the printing hammers, as will be described later.

1 When any one of'the transactions keys Si is depressed, it is retained in such position by means such as that shown and described in the abovementioned Sh pley patent.

The keys 6! control the setting of the difier,

freely mounted on a rod 66 supported by the machine side frames. The armb5 is releasably connected toa driver 8?, freely mounted on the rod-.66, by means of the usual latch 65, held against the driver 6*! by a. spring'fiii. Therdriver B7 is connected by a link 59 to a lever 19 pivoted at TN. The lever 19 carries rollers 72 and '13 cooperating with cams 14' and 15, respectively, secured to a main drive shaft .15. The shaft Hi rotates'in a clockwise direction and is given one complete revolution during each single-cycle adding operation and two complete revolutions during each total or sub-total operation, as Will be described later.

Upon each complete clockwise rotation of the shaft 1E,'the latter, through the cams 74-15, 75 the lever 19, and the link 69, moves the driver sition, all of the printing hammers are rendered ential mechanism,'which in turn controls the setv -61 first clockwise and then counter-clockwise. This driver, through the latch 68, carries the differential arm 65 with it until an end of a bell crank 11, which, together with a link I8, supports the latch 68, contacts and is stopped by the inner end of whichever one of the keys BI is depressed. When this occurs, the latch 68 is withdrawn from a shoulder I9 formed on the periphery of the driver 61, and the latter continues its regular excursion in a clockwise direction. Upon return counter-clockwise movement of the driver 61, the latch 68 again affects the driving connection between the differential arm 65 and the driver 51, under the influence of the spring Gil, when the driver reaches the position in which said latch 68 had been disengaged from the driver 61.

The differential arm 65 has pivoted thereto one end of the usual beam 80, the other end of the beam being bifurcated to embrace a stud 8I in a link 82, one end of said link being pivoted to an arm 83 secured to the sleeve 84 on a shaft 85 journaled in the machine side frames.

Considering the parts to be in the positions shown in Fig. 1, the clockwise movement of the differentially adjustable arm 65 moves the left end of the beam 80 upwardly, thus lowering the right end thereof, at the same time lowering the link 82 to rock the arm 83 and the sleeve 84 in a clockwise direction.

To insure that the right end of the beam 8|] is positioned correspondingly to the differential setting of the left end thereof, the lever I0 carries a roller 92, which roller contacts the under side of the beam 80, moving it positively, so that its upper edge contacts a collar 93 mounted on the rod 68.

The sleeve 84 has secured thereto a segment 94 meshing with a segment 95 loose on a stud 96 mounted in the left side frame 86 of the machine. The segment 95 has secured'thereto a cam arm 51, which is differentially adjusted under control of the transaction keys BI. The cam arm 91 controls means for superseding the control normally exercised by the total control lever over the printing hammers, as will be more fully explained hereinafter. Due to the beam half rotation by a manually operable handle,

construction for setting the link 82 and the cam arm 81, the cam arm 91 remains in the position in which it was set at the end of the operation of the machine; that is, it does not return to its normal position, due to the fact that the right end of the beam 88 and the link82 always remain, at the end of each operation, in the position in which they were set during that operation. 3

It is not thought necessary .to go into any detailed description of the mechanism for driving the main drive shaft Iii, and therefore brief mention will be, made as to how this shaft receives its motion. Any well-known drive mechanism may be used .to operate this shaft, such as an electric motor of the type illustrated and described in the United States Patent No.,

1,144,418, issued to Kettering and Chryst on June 29, 1915,

Sometimes it is desirable to operate the type of machine herein referred to byhand, and for the accomplishment of this purpose the shaft I6 has secured thereon a gear 98 (Fig. 10) meshing with a gear 99, the latter being twice the diameter of the former, and is freely mounted on a screw stud 100 supported in the right-hand machine side frame (not shown). As shown in the previously-mentioned Brand Patent No.

Printing mechanism The printing mechanism in machines of the type to which this invention relates is usually located at the left side of the machine. A printer frame IUI (Fig. 9), spaced apart from the left side] frame by studs I83 (only one being shown) supports substantially all of the printing mechanism.

The printing mechanism includes type carriers I04 (Figs. 4, 7, and 9), from which the receipt and the detail strip or slipare printed, such type carriers being adjusted differentially under the control of depressed keys and supported by nested sleeves I85 extending laterally from the left side frame 86 through the printer frame IIJI, as fully illustrated and described in the previously-men tioned Shipley and Brand patents.

Three upper printing hammers (Figs. 4, 5, and 9) which include an item hammer I I I and a total hammer H2, are provided to take impressions from the type carriers Hi4 and print the same on the receipt. An electro hammer II3 takes impressions from an electrotype plate (not shown). Two cams H4 and IE5 (Figs. 4 and 6) are provided to actuate these three hammers, the cam I I4 being adapted to actuate the electro hammer H3, and the cam II5 being adapted, to actuate the item hammer III and the total hammer H2. The connection between the cam H5 and the hammers I II and I I2 will be described presently. A lower printing hammer 22i (Fig. 7) is provided for taking impressions from the type carriers and printing the same on a detail. strip or inserted slip. A cam 23I is provided for effecting the actuation of the hammer 22 I i Item and total hammer operating mechanism The item hammer III and the total hammer II2 are pivoted on a rod II6 (Figs. 4, 6, and 9)" secured in the printer frame NH and an auxiliary frame I I'I supported by studs mounted on the frame Hit. A bail H8, connecting arms H9 and I28, free on the rod H6, is provided for use in connection with the operation of the hammers-III and H2. Loosely mounted on the rod I16 and secured to the arm IIQ of the bail H8 is an arm IZI, which is connected by a linkI22 to an operating lever I23 pivotally mounted on a stud I24 secured to the printer frame IUI, The

lever I23 is provided with a'nose I25 adapted to I cooperate with the cam I i5.

Thebail I I8 overlies a finger I35 of an oper-' ating arm I36 freely'mounted on the rod II6. A spring I31 constantly tends to rock the arm I36 counter-clockwise, thus maintaining thelfinger I35 in cooperative relationship with the bail II8. The arm I38 also has a forwardly extending arm I38 adapted to coact with a roller I 38 loosely mounted on a stud I48 secured to the hammer stud II II (Figs. 6 and 9) onan arm 20!! of a yoke 2M, hereinafter described, which yoke is carri bytherodIIB. v

1 arm I 35: is-movedinto contact with sunfaceof'the'hammer HI.

2,41 area The earn I (Eigi i) is; secured fto; a. rinter drive: shaft.- L42: iournaled in. the left side? frame 86; andjheprintersideframe till. Theshaft 42.,ia given one; complete; clockwise rotation during each.

cycle of operation. of the machine by the train of gears I36, I3I', and I32 (Fig. 10) driven by the shaft 1&.. Upon. the clockwise. rotation ofthe shaft M2, alobe its on. the cam H5 will coact printer frame, tilt and; the auxiliaryframe. I.I:1,.

area arr-arm I145; and a. pawl. L46, resilientl con-. nentedtogether by a spring I141. secured to a. stud I 58 in the pawl M15; and to a, stud I49. the arm 45.; thus. normally maintaining against, the stud. I4 9; The free end of the. pawl Mfihorrnal-ly engages a notch I59). in the arm I35. A. spring I52; constantly tends to, rock the arm l hiiandgthrough the stud. I 49, the pawl I as clockwise, butisnormally prevented from doing soby j the. engagementof the pawl M5, with the. notch ifiil-inthe arm; Efifi.

However, whenathe-arm 6-36 is rocked clockwise by. the. cam; H5, as described above, the spring I525 will'rockthe arm. I 45. and the pawl. I45 clockwise until the arm. hi5 strikes a rod I53 supported i in the'fnames. Hit and I1. This clockwise movement of the. pawl I66 positions they free end thereof in front of a finger I54 on the arm I36, thus preventing counter-clockwise return movement; of the arm, I36 under influence of its spring,

Therefore, when the lobe I43 clears the nose I25, the spring I 31 cannot function to operate thehammer III. and the lever I23. The link I22,

, the arm I at, the bail II 8; and the arm I35 will be. held in; their. cocked or retracted positions by; the pawl I66 until an operation of the machine. inwhich. the. printing hammer I! I is rena dered operative;

Withsuch an arrangement, all idle operations i of: the operating means for the printing hammer l,

IfI;I: are eliminated, thereby reducing the amount 1 of wear and strain on the parts constituting such the pawl M6 means, as well as greatly-reducing. the noise in- 3 cident to their operation;

It is during the first cycle of'a total'operation that the hammer I I I is renderedinoperative, by

means described later, and it is during such cycle j that the end of the pawl-I 56, is moved in front; of; the: finger I5 5 (Fig. alof the operating arm I36, and, at. the same time a finger Ifil of the the. upper During the second cycle of the total operation,

1 when th'e'lobe I43: strikes the nose I25 of the levepIZS the hammer III and the arm I35 are moved. slightly. The hammer MI; throughthe; finger IBI; rocks the arm I45 counter-clockwise and stretches the spring I41, and, just beforethe lobeltpassesoff. the nose. I25, the arm Iiifiis moved just enough to relieve the pressure on.

the end ofgthe pawl= I 46, whereupon the tensioned spring I41 rocks the pawl. I46 counter-clockwise,

again placing its end in front. of the notch I53.

eloskwisevery rapidly-,. and, the arm; I-38.-,. through: the; rollen I 3;9;,.ro1cks:the" hammer III with-suing cijent force to cause.- it toprint: from the type; carriers "14-, v

' If,'j-on-; the other hand, the printing hammer. liIfI had: been operative atthe. time the arm I36 was; rocked clockwise, as described above, Said hammer I;I-I; would have been rocked clockwise Wattle-spring Idle. During such clockwise move.- mentoigthe hammer; I-I;I-,, the upper edge thereof would; have enacted; Witht-he finger IEI. and preventedlth e spring I52 from rocking the arm I45 and: the; pawl Its clockwise, thus maintainingt-heilatten arm-opposite the. notch I50; This per mits' the-arm L36; after the. lobe I43 hascleared,

the. nosev I25, to be rocked rapidly counterclockwise by the spring I31 to imparttthe necescounter-clockwise. movement to; the printing hammer IIti, totake-animpression. from the type. carriers I M Thegcounter-clockwise movement given tdthe' arm I36 by the spring I31. is limited by a finger I59 of the-lever I23; striking a stationaryblock 1:62;, and; the hammer III continues on. under mcmentumto make the; print.

It willalsoreadily b;e;se.ene fnom the, above that cooperation of the; pawl Mt with. the. arm- Hi8 prevents; any rebound or the printing hammer lI-l which might result in; an accidental opera,- tion thereof. It is therefore.- possible inlthepresent invention to eliminate the usual reboundplteltentihg, pawls; used in. printing mechanism of this type;

The-total hammer I;:'I-2 is actuatedv by the cam H5; in the; same; mannerasjust describedfor. thev item, hammer M1. The total hammer Ill-2 has associated therewith an operating arm I14, (Figs. 5' anct 6;). The arm- I l-I has a. finger L12 cooperating withthe bail: M3. An arm I13 integral:

with the arm. I51!!! cooperateswith a stud l-l l on:

the total: hammer H2. A spring. I15 normally holds; the stud; tie against the. arm I13.

Also asseciated-with thetotal hammer H2 arean. arm: H6 and a pawl I111, resiliently connected together by a spring I1 8; A- spring L13 constant- 1y; tends to'rockthe arm I15 andthe pawl I11 clockwise. but isnormally: prevented from doing,- sozby the engagement of theend'ofa the: arm: I16 withia; notch l fifiyof, the arm I?! Ir- Upontheclockwise rotation: of the cam M5,. the lobe; I=4 t rockst-the lever I23- and the bail I1 8- clockyvise, as; described; above, whereupon said.

bail I1I.8',1thr.ough the finger i12 rocks the arm.

L121 clockwise, against theactionof; ale-spring I32. If. at; thistime; the. total, hammer I itis inoperae tive, the spring I19 will rock the arm I16 clock:- wise and, through a stud I83 carried thereby, will; rock; thepawl; I11:- clockwise tov position the free'end; thereof. in front of afihger IS -i on the; arm: flit to:v prevent, counter-clockwise return movement of.:said;arm l1I under-the influence.-

, return-a t their normal positions,- the pawl. b151,,

being in front of the finger I84, will prevent the spring I82: from rocking the arm I, 1-.I- counterclockwiseandfihe total hammer 2'1 will; beheld in; its, cooked; or retracted positions.

'Ehe: pawl I511 (Fig; 5);v is released from 'th'e finger: lifi l inthe' same: mannerv that the arm [46 is releasedifrom -the finger, I54.

During; thesec-ond cycle-bf: atotal operatiorn,

he p r i f h hammer H r u h a:

finger I 85; on the; arm: I1 6,,rocks-=said'ann and? of the pawl Ill and the finger I84 the tensioned spring I18 rocks the pawl I ll counter-clockwise to place it opposite the notch I 89. Now, when the lobe I49 clears the nose I25 on the lever I23, the spring I92 will rockthe arm I II and the lever I23 coimter-clockw-iseuntil the finger I69 of the lever l23 strikes the block I62. Upon such rapid clockwise movement of the arm I'II, the arm I1 3, through the stud I14, actuates the total hammer H2, in the same manner as described above for the item hammer- III, to take an impression from the type carriers I94. If, on the other hand, the total hammer H2 had been operative when the arm III was rocked clockwise, as mentioned. above, the spring I15 would have rocked :the total hammer H2 clockwise until the upper edge thereof contacted the finger I95 and rocked the arm I16 slightly counter-clockwise against the action of a spring II9 to maintain the pawl In in its normal position in front of the notch I99, so that the hammer IIZ would operatetoprint. a I

It will (lessen from the forego ng that the item hammer III and the total hammer II2 each controls the effectiveness of its, respective operating arm I39 and Ill. The means by -which the totallever controls the operativeness ofthe hammers III and H2 will be-described hereinafter, I

Electra printing hammer 'operatmg 'm'echarzism A separate train of mechanism .is provided to actuate the electro hammer H3. This train of mechanism is the same in principle of operati n as that previously described herein for the item hammer III and the total hammer II2.

Associated with the electro hammer I I3 is a cam II4 (Fig. 6), which is also secured to the shaft I42. The cam H4 is provided withia lobe I95 adapted to coact with a nose I95 on an operating lever I9? pivoted n the stud I24. The lobe I95. is so located on the cam H4 that the lever I91 will be actuated thereby before the lever I23, associated with the item hammer III and the total hammer H2, is actuated by, the cam II5. By such arrangement; the electro printing hammer ,I I3 is operated at a different time in the operation from the time at which the item hammer III and the total hammer H2 1 are operated; thus a certainamount of the noise.

incident vto {the simultaneous operation of all I three hammers is eliminated, and a betteridis-l tribution of the load placed onthe machine operating mechanism is eifected.

The lever I9! is connected by a link I98 to an arm I99, pivoted on the rod H5, and is conneoted to another arm 299 by a bail 29!. A spring 292 normally. maintains the-hammer H3 in a position where a lug 293 thereon rests against the under-side of the bail 29L The bail 29I has a finger 294 on the upper edge thereof. Pivotally mounted on therod I44 are an arm 295 and a pawl 299 resiliently connected together by a spring 29'I. rock the arm 295 and the pawl 299 clockwise. The arm 295 carries a stud 299, which c-o-acts with the upper edge of the pawl 295 130 rock the latter clockwise when the arm 295 isso rocked by the spring 299. The pawl 299, however, normally rests. on'top of, the finger 294 and is'theree by held against clockwise movement by the spring 298, as is also the 'arm295.

' It will thus be seen from the above that, when A spring 299 constantly tends to from the finger 294 to permit wise be rocked clockwise, against the action of a spring 2I9 fastenedto the arm I99 and to the rod I53. Upon such clockwise movement of the bail 29l, the finger 294 will be moved from beneath the pawl 296, thereby releasing the arm 295 and the pawl 296 forclockwise movement by the spring:299, Whether or not the'arm 295 and the pawl 295 receive such clockwise movement at this time is determined by the operativeness of the electro hammer II3. If the hammer is operative, the spring 292 will rockthe hammer II3 clockwise at the same time the bail 29I receives such movement. When this occurs,- a surface 2 formed on the upper ed e of the hammer H9 will coact with a finger2I2 on the arm 295 to rock the arm 295 slightly counterclockwise to preventclockwise' movement of the arm 295 by the spring 298, thereby maintaining thepawl 299 in its normal position above the path of travel of the finger 294 on the bail 29L,

It will, therefore. be seen that, when the lobe I on the cam H4 clears the n se I99 on the lever I91, the latter; together wit-h the bail 0', will be givena rap d counter-clockwise move ment by the spring 2I9, such movement of the lever I9'I being limited by the rear arm thereof striking the block I92. During such counterclockwise movementof the bail 29I, the lower edge thereof will coact with the lug 293 to impart a like movement to the electro hammer I I3 to cause the latter to take an "impression from the type carriers I94. I

If, on the other hand,- theelectro hammer I I3 is inoperative at the time the bail 29I is rocked clockwise, the spring-298 will rock the arm 295 clockwise until the left end thereof strikes the rod I53, thus rocking the pawl 295 clockwise to position the free end thereof directly in the path of movement of the finger 294 to preventcounterclockwise movement of the bail 29I. Therefore, when the lobe I95 clears the nose I96, the lever I91 and the bail 29I will be retained in their retracted positions by-the pawl 296, against the action of'thespring 2|.9, to render the electro hammer operating means inoperable when said hammer has been previously rendered inoperative.

During the second cycle of a total operation, the end of the pawl 299 is released from the finger 294 bythe hammer II2 contacting the finger 2I2 and rocking the arm 295 to tension the spring 29'! so that, when the pressurebetween the finger 294 andthe end of the pawl 209 is'removed, the tensioned spring 291 will rock the pawl 299 away operation of the electro hammer II3. v 1 Detail strip Zoiuer printing hammer Operating mechanism A lower printing hammer 22I (Fig. 7) is provided for taking an impression from the type carriers I94 and printing the same on a detail strip. This hammer 22I ispivotedbnthe stud 9 I24 and has a ,rearwardly extending arm {222; Also pivotaly mounted on the stud I24 is an'arm 223. having an integral arm 224connected=by a spring 225 tothe hammer -22I. The hammer 22I carries astud 226, which is normally held by the spring 225 against another arm 22'Iintegral with the arm 223. Pivotedon the stud I24 is an operating arm 228 secured-to a bail229 also pivoted 0n the stud I24. ,The bail229 underlies the arm 223. M

g Upon clockwise rotation -of jthe Inaajnzjifi roller 288, the arm 28! and the shaft 285 clockwise, which movement of the shaft 205 corresponds to the movement given to said shaft during the second cycle of a total or sub-total operation to render all of the printing hammerscperative, as will be further explained hereinafter.

In the present machine, it is desirable to print both on the receipt and on the detail strip each time a No-sale operation is performed. It will be seen from the above that,when the key BI is depressed, thecontrol normally exercised by the total lever 25f over the operativeness of the printing hammers during a single-cycle operation will be superseded by the control exercised over said hammers by the cam arm 91 under control of the No-sale key. Since the Grand total key is depresse ver is positioned in its total position, said Grand total key will not control means to supersede the control normally exercised by said lever over the operativeness of the printing hammers.-

The means by which the totallever 25l and the No-sale key 6! control. the operativeness of the printin hammers includes a hammer contro1 lever 300 (Figs. 4, 6, and '7) pivoted on the outer one of the nested sleeves I05. This lever 300 has a flange adapted to cooperate with a stud 302 on an arm 303 (Fig 7)secured to the lower printing hammer 22 I. A flange 300, formed on the up extension 305, which is adapted to cooperate with a stud 305 (Fig. 4) projecting laterally from an arm 30'! secured to the item printing hammer III. The flange 304 also cooperates with'a stud 308 on an arm 303 secured to the total printing hammer H2 (Fig. 6). The extension 305, which cooperates with the stud 305 on the arm 30'! of the item hammer HI, isshorter than the oppositely-extending flange 300, which cooperates with the stud 308 on the arm 309 of the total hammer H2, the twostuds 306 and 308 being spaced apart from each other and extending laterally toward each other. The hammer'c'ontrol lever 300 extends into the space between the two studs 306 and 338 on the parallel arms 30'! and 300 of the item hammer Ill and the total hammer I I2.

When the total control lever 25! is in its add position, for all operations except a No-sale operation, the flange 3M (Fig. 7) cooperates with the stud 302 on the lower hammer arm 303 to prevent operation of the detail printing hammer 22!. Also the flange 300 cooperates with the stud 308 to prevent operation mer H2, but the extension SEB-ibeing shorter than the flange 303, does not lie above the stud 305, and consequently the item hammer III is free to operate during such adding operations.

The electro hammer H3 is also renderedinoperative by the hammer control lever" 300 .in a manner now to be described. A disk 315 (Figs. 4 and 6), pinned to the lever 300, is provided with a projection SIS, which is normally positioned in the path of travel of a stud 3II carried by an arm 3H3 connectedby a bail 3!!! to an arm 320 normally urged clockwise by a spring 32!. The arms 358 and 320 are pivotally mounted on a stud 32-2 carried by the printer frame [0h The arm 320 has a notch adapted to coact with a stud 323 on the electro hammer H3. As long as the hammer control lever 300 is in the position shown in Fig. 6, the notch in the arm 320 engages the stud 323, thusrendering the electro hammer H3 inoperative.

It will thus be seen from the above that, dur- No-sale d only when the total leper end of the lever 300, has an of the total haml4 ing'all' adding operations except a No-sale oper-: ation, the flanges 30! and 304 on the lever 300 render the lower printing hammer 22! and the total hammer H2 inoperative, while the projection 3l6 on the disk 3l5 renders the electro hammer H3 inoperative. I However, such means has no effect on the item hammer III at this time.

The means fo the hammer control leve is old and well known in the art and will therefore be only briefly described herein. The shaft 285 (Fig. 3) has secured thereto an arm 343, which carries a stud 350, which projects between a pair of arms and 352 journaled on the shaft 285 and held against the stud350 by a spring 353. A stud 354, carried by the forward arm of a lever 355 pivoted on the shaft 235, also projects between the pivoted arms 35| and 352.

When a total operation is to be performed, the total lever 25l'is moved downwardly to its total position, which imparts merit to the shaft 285, as previouslygdescribed, as well as to the arm 349 secured thereon. Such clockwise movement of the arm 349 is transmitted by the stud 350 to the arm 35], thence through th spring 353 to the arm 352-, which contacts the stud 354 to rock the lever. 355 clockwise. A stud 336, carried by a rearwardly extending arm of the lever 355, is embraced by a notch 3t! (Fig. 4) formed in the hammer control. lever 300, whereby clockwise movement of the lever 355 is transmitted to the control lever 300 to rock the latter counter-clockwise. The counter-clockwise movement thus imparted to the lever 303, as well as to the disk 3l5secured thereto, by the total control lever 25l, when the latter is moved from its add position to its total position, is insuificient to move th e flanges 3M and 304 out of cooperative relation with their respective studs 30 r controlling the positionin of r300 and the disk 3l5 2 and 308 on the arms 303 and 309, respectively, thus releasing the hammers 22! and H2 for operation; iii Also 'the projection 3 latter being moved with the lever 300, has. not been moved out of cooperative relationship with the Stud 3" (Fig. 6) on' the arm 3H3, thus, maintaining the arm 320 in engagement with the stud 323 on the electrohammer H3. Therefore, the lower hammer 22!, the total hammer H2,'and the electro hammer I I3 willremain inoperative during the first cycle of said two-cycle total operation. the flange 304, whichnormally occupies a position out of the path of movement of the stud 306 on the arm 301, is shifted by this counterclockwise movement of thelever 300 into its effective position above the stud 306, thereby 6 rendering the item hammer HI also inoperative during the first cycle of said total-taking operation. I

Near the end of the t, which. through the a clockwise move- 15 on the disk 3l5,:the

However, the extension 305 on first cycle of such totaltaking operation, the shaft 285 is given an adbove, imparts an addi ment to the ham es 3M and to normally render said hammers means wi'll now be described.

i counter-cloc'kwise. movement 362, 398, 3.65, and 311," respectively, thereby rendering the lowerhammer 22!, the total hammer M2, the item hammer Ill, and the electro harnmer H 3 operative.

During a single-cycle No-sale operation, the rcam arm 9?, which is adjusted under control of the No-sale key 6 i,cooperates with the roller 236 to cause the shaft 235 to be rocked clockwise, as described previously. Th clockwise movement Whichthe shaft 285 receives under control of the No-sale key lil' is sufiicient to render all of the printing hammers 22!, l l I, 1 l2, and II 3 operative inthesaime manner as just described for a totaltakingoperation.

Duringa sub-total operation, all of the printing'harnmers i i-l, H2, H3, and '22! are inoperative during-the first cycle of said sub-total operation, while during the second cycle only the item hammer i i l is operative to print the amount of the sub-total on the receipt. The manner. in which all of said hammers are rendered inopera- .tive during the first cycle of such operation is the same as that employed during the first cycle of a totaloperation, as described previously; in fact, the hammer control lever Ella and the disk 385 receive the same adjustments during subtotal operations as they do during total opera tion-s.

Howeven'me'ans is provided'for maintaining the total hammer M2, the electro hamduring the second cycle of said sub-total operation, after the control lever 339 and the disk 315 have been rocked 'suificien-tly counter-clockwise operative. This When the total controllever 25! is moved from add position to'sub-total position, as viewedin Fig. 10, it will, through a link 5314., rock an arm Since the arm 375 is it will transmit such 3.15 counter-clockwise.

3:18 freely mounted on a rod 379 supframes '85 and the rod 3322 supported in the machine side frames.

Q'Secured to the gear 38! is a cam plate 383 having a high spot 3% formed on the periphery thereof.

It will thusbe seen from the above that the clockwise' r Freely mounted on a shaft 385 journaledin the machine sid frames is an arm 386 carrying a groller Sill. A spring 333, secured to an extension 389 of the arm 383; constantly urges said arm counter-clockwise to maintain the roller 387th cooperative relationship withthe periphery of the cam plate 383. The extension 389 has pivoted thereto one end said link being slotted to engage a stud 39| on an arm 382 of ayoke 3&3 (Fig. '9) loosely mounted a rod 394 secured in the left side frame 86 Another arm 413! of the yoke 393 carries a stud 4 02, which is emand the printer frame 'i'ill.

braced by the bifurcated portion of an arm 463 pinned to a shaft 456 journaled in the printer .frame Iill and the auxiliary frame HI, 13150 pinned to .the shaft 466 is a pair of arms W and #96. which are adapted to be moved into the path 1 given to the see men't 3713 wilL'through the segment lever 3-78, rock the "gear 38! and the plate 383 counterof a link 3%, the other end of 5 out :01 cooperative relationship with the'studs' of movement of studs 40? and 323' on the total hammer 'iE'Z- and .the electro hammer H3, respecti'vely.

. It will beseen from the foregoing that, when the total control lever 255 is moved to its sub-'- total position, the cam plate 333 will be moved counter-clockwise, causing the high spot 384 thereon to coact with the roller 38? to rock the arm 36% clockwise against the action of the spring 388.. As long as the total control lever remains in the sub-total position, the cam plate 383 yoke 3% clockwise, but

mer' Hi3, and the lowerhammer 221 inoperative ellfi'meshing with the will be positioned so that the high spot 35 3, will remain in cooperative relationship with the roller 38? to maintain the arm 388 in its moved-posh tion. A spring we constantly tends to rock the is normally prevented from doing so by the arm 386, through the exe tension 38S and the link 3%. When the arm 38% is rocked clockwise, as described above, it will, through the link 3%, rock the arm 393, and the arm 565 countenclockwise. When this occurs, the arm to l through the stud 4B2, the arm 4%,- and the shaft M 3, will rock the pair of arms 455 and 4535 clockwise (Figs. 6 and 10) to position-the lower ends of saidarms directly above and in the path of travelof the studs 153? and 323 on the total hammer H2 and the electro hammer I i3, respectively, [to render the same inoperative during the entire sub-total operation.

Means is provided "for maintaining the arms 505 and 4536 in their eifective positions during both cycles of said sub-total operation, and they are. not returned-to their normal inefiective positions until shortly after the beginning of the next adding or total-taking operation. The means for accomplishing this result will now be described; Associated with the stud sea on the arm eat is. a lever liiil (Fig. 10), having one end thereof formed in the shape of a hook Mil, which n'orj r i'n'a'lly bears against the under side of the stud @532, under the'influence of a spring 4! I. When the arm 49! is rocked counter-clockwise, to render the arms ifiii and M35 eifective, the lever 459 will be' rocked clockwise by the spring t to engage the hook tlfi thereof with the stud- 302, to maintain said arms in their eifective positions until the next adding or total-taking 'operation ofthe machine. The lever 4%, which is pivotally 'mounted on a stud MZin the printer frame ms, is bifurcated at its other end to embrace astud N3 of a, lever 4M freely mounted on'a stud H5 carried by the printer fram mi The lower arm of the "lever 4M lies in the path of'travel of one arm of'a bell crank sit freely mounted on a stud 417 in the printer frame 16!. The other'arm oi .the bell crank M6 carries .a'stud M8 embraced,

by'a not-0114!?! formed in the under side of a slide 320. The slide 423 is pivoted at its right-hand end to a, lever '42! and is guided at its opposite end rinter frame Ill-I The lever 42'! is by 'a pin 422 projecting from the through as'lot 4'23 in said slide. pivoted 'on'a stud 52 3 supported by the left side frame 86 oifthe machine and the printer frame mi, and carries two rollers e25 andellfi, which 'coact with cams lz'i and sea, respectively, secured to the printer drive shaft M2.

During each cycle of operation of the machine,

the cams '42-! and 628 oscillate the lever 52! to rock the bell crank H6 first counter-clockwise movement, coact with the lever, M3 counter-clockwise against the action and then clockwise to its normal position. The bell crank 415 will, upon such counter-clockwise lever M4 to rock the of the spring 4i i. If at this time the arms and ied-are being 3&2, the yoke maintained in their effective .wise movement of the lever 409 will disengage the hook from the stud 402, thus permitting the spring 408 to rock the yoke 393 clockwise to return'the arms 405 and 406 to their normal ineffective positions away from the studs 401 and 323 of the total hammer I I2 and the electro hammer H3, respectively.

The means for maintaining the lower printing hammer 22I inoperative during the second cycle of the sub-total operation, after the lever 300 and the disk 315 have been positioned to render said hammer operative, is the same as that illustrated inFigs. 9 and 10, as well as fully described, in the Gruver patent hereinbefore referred to, and reference may be made to such patent for a full understanding of this means.

-After the lower printing hammer 22l is operated to make an impression, the stud 226 (Fig. .7), under the influence of the spring 225, rests on the arm 221 of the operating arm 223. In order to prevent the hammer 22! from being positioned so that the stud 302 will be in the path of movement of the flange 301 when the latter is to be rocked beneath the stud to render the hammer inoperative, means is provided for slightly raising the hammer. This means includes a hock-shaped arm 33I (Fig. 8), which normally coacts with a stud 332 on the rear end of the hammer 22f to maintain the latter in a position so that the stud 302 will be above and out of the path of movement of the flange 301 on the control lever 300. Thearm 33| is connected by a bail 333 to another arm 334, such bail and arm being pivotally mounted on the stud;234. The arm 334 carries a stud .335, which projects through a slot 336 in a pitman 331 slidably mounted on the printer drive shaft I42. A pair of cams 338 and 339 fast on the shaft I42 cooperate with a pair of rollers 340 and 341, respectively, on the pitman 331 and normally hold the pitman in its extreme left-hand position, as viewedin Fig. 8. During each cycle of operation of the machine, just before the lobe 230 coacts with the arm 228 to effect the retraction of the hammer-operating arm 223, thecams 33 8 and 339 cooperatewith the rollers 340 and 341 to shift'the pitman'331 toward the right. The pitman 331, through the'slot 336 and the stud 335, rocks the arm 334, the bail 333, and the arm 33l clockwise, whereupon the spring 225 lowers the hammer 22! until the stud 226 rests on the arm 221. After the hammer 221 has had time to operate, and near the end of said cycle of operation, thecams 338 and 339 move the pitman'331 toward the left, which rocksthe arms 334 and 33| counter-clockwise. When this occurs, the arm 33I will coact with thestud332 to move the hammer 22l slightly clockwise to raise the stud 302 sufficiently to permit the flange 30! to be posi ne erapists-s esteem d Control of upper hammers by check control key The machine is provided with the regular check control key, whereby the upper hammers may all be rendered ineffective when a check is not desired. In Fig. 1 is shown a check control key 440 pivoted at 44l to the printer frame l0l, shown only in Fig. 9. This key controls the hammers I l, H2, and H3 in the manner fully shown and described in United States Letters Patent to Samuel Brand, No. 1812,194, dated June 30, 1931, and such controls need not be repeated here.

However, on the operation following one in which the key 440 has been depressed, it is necessary to control the total hammer H2 and the electro hammer H3 to prevent them from operating during said following operation. Therefore, thelink 442fwhich is pivoted to the key 440, has an arm 443-with a flange444 positionedto the rear of the arm 405. Upon depression of the key 440, the flange 444 rocks the arm 405 above the stud 401 of the total hammer H2 and simultaneously rocks the arm 406 above the stud 323 of the electro hammer H3, and said arms 405' and 406 are so held by the hook 410 of lever409, as previously described, until near the end of an operation following an operation in which the key 440 has been depressed, in order to prevent the hammers H2 and H3 from operating during an item-entering operation. f

The key 440 is held'depressed by a pawl445 engaging a notch 446 of an arm 441, to which the link 442 is pivoted, and is held depresseduntil a total of the items is taken, whereupon it is released by an arm 448, secured tothe usual. shaft 449, which arm 448, by its counter-clockwise movement, releases the pawl 445 from the arm 441 in the manner and by means shown and described in said Brand patent.

As the functions and operations of the present machine were quite fully described at ,the'beginning of this specification, and as thecomplete the one form or embodiment herein disclosed,'.for

it is susceptible of embodiment in various forms, all coming Within the scope of the claim s which follow. I i w I f What is claimed is: h p

1. In a machine of the class described, the com bination, of a v printing hammer; a retracting spring for said hammer; means engaging. the hammer to normally maintain the hammerin an unretracted position against the actionof said spring; a spring, stronger-than the retracting spring. operatively connected to said means to normally maintain said means. in position to maintain the hammerin unretracted-position; a cam to actuate said means, and tension said stronger spring, to release the hammer to the action of the retracting spring, said cam formed to thereafter release said means to the actionpf the stronger spring to operate the hammerfo'r printing; a pawl normally urged towarda position wherein the pawl engages said means to hold the means in operated position; a spring-actuate ed arm operatively connected to said pawl, hammer engageable with the arm when the hammer is retracted to hold the pawl out of said holding position; and means selectively positionable into one or another position; which means, when in' one position, engages the hammer to prevent retraction of the hammer by the retracting spring, thereby permitting the pawl to move into said holding position and prevent operation of said hammer, said last-named means, when in ghe 9a 2. In a machine of the class described, the combination of a printinghammer; an operating arm for said hammer; a spring connected to the hammer and, tensioned to draw the hammer into engagement with the operatingiar m; cam means to, retract the operating arm in one direction; a spring to actuate the operating arm in the reverse direction to move the hammer in printing directi'om,v means engageable with the hammer to maintain the, hammer in normal, position and movable out of engagement with the hammer to release, the hammer to the action of the firstnamedj spring; means located in the path of fl'ailelf of" the hammer; and a spring to normally urge'the last-named means to'engage the operating arm whenthe operating arm is moved to the retracted position by thecam means, to maintain theoperating, arm inretracted position when the hammer is maintained in normal position by the meansto engage the hammer, and movable out o fgthe path of movement, of theretracted operating arm by the hammer when the hammer is thereafter movedby said-first-named spring upon being released by the means to enga e the ham- 3; In a machine of the class described, the combination of' a printing hammer; an operating device for saidhammer; a'resilient means tn drawthe hammer into engagement with the device; cam,means to retract said device preparatory to; the device operating said hammer for printing and" thereafter to release said device; a

to operate the device in printing direction atterzthecamhas retracted and released said devicegan: element normally urged into the return path of movement of the device to retain said; device in its retracted position; means movabieinto engagement with said hammer to maintain the hammeragainst movement by said resilient means; and means resiliently connected to said element and extending into the path of movement of ,the hammer soas-to-be operable by said: hammer when the latter is drawn into-engagement with the device afterthe device is retracted by, said cam, to withdraw said element from-the return path of movement of said device tothereby'cause thefspring to operate the devi'ce anq through the-device move the printing hammer in; printing direction.

4i Ina-machineofthe class-described, the combination o faprinting hammer having a normal position and a retracted position; an'operating devicefor'saidhammer; a spring for moving said device: and: thereby moving said printing hammerin printing direction; a resilient means to drawthe hammer into: engagement with the device; means for{ retracting said device prepara- 'tory to the device being operated bysaid spring and'thereby, operating'said hammer to print; a settable; means cooperable with the hammer wheninone;position to maintain" the hammer i i, 20 in the normal unretracted position and said" settablemeans, movable into" another position to release: the hammer to theaction of the1resilientmeans; and means including-apa-ir of interconnected members, one-member being' normally ef fective to engage and maintain said device" in its retracted position, and the other member being located in the path of movement of the hammer so as to be actuated by said hammer when the latter is released by said settable means, to' withdraw said first-mentioned member from engagement with said deviceto release the deviceto-the action of said spring.

5; In a machine of the class described, the combination of a printing hammer; an'operating device for said hammer; a spring for actuating said device; resilient means todraw'the' hammer I into engagement'with saiddevice; settable means engageable with the hammer for maintaining saidhammer against the action of the resilient means, said settable means movable out of engagement with the hammer for releasing said hammer to the action of the resilient means; means for retracting said device preparatory to the device being operated by said spring for operating said hammer to print; means normally efiective to move into engagement with saiddevice when said device is in, its retracted position to maintain said device in said retracted position; and means operated by the hammerwhen the hammeri's released tothe action of the resilient means for withdrawing thenormally effective means, to thereby free the retracted device to be operated by said'spring and to thereby operate the hammer to print.

ELMERC. CARTER. CHARLES-G; DUDI S.

REFERENCES CITED The. following references are. of record in the file. of this patent;

UNITED STATES PATENTS Number Name. Date 1,628,336 Shipley May 10, I927 2,209,771 Grierset a1 July 30,1940 1,613,129 Robertson Janni, 1927 1,730,052 Berger Oct. 1, 1929 1,747,753 Sundstrand' -1..- Feb. 18,1930 1,898,0el8- Goldberg, V ,Feb. 21, 1933 2,139,719. Brietling et al. .i Dec. 13, I938 2,229,731.v 7 Fort 1 Jan, 2.8, 1941 71,817,883 Shipley i Aug, 4, 1931 1,963,733 Brand, June19, I934 1,856,147 Shipley Junev 28,1,1932

. 1,812,194 Brandi June '30,,1193'1 FOREIGN 5 PATENTS- Number I V Country v Date" 8523346 France 1 Nov.- 9,1939

France July 12, I930 

